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3 years ago

I don’t understand number 23

Mathematics

2 answers:

Andrews [41]3 years ago

8 0

Answer: 70 minutes

Step-by-step explanation: simply do 420/6 to find out the number of minutes it will take.

You could also do this as a ratio of minutes to cartons 1:6 and find out how many times you must multiply 6 cartons to get to 420 cartons. That number is 70 so just multiply the 1 for the number of minutes because in ratios you must multiply by the same value for each number in the ratio.

N76 [4]3 years ago

5 0

Answer:

70 minutes

Step-by-step explanation:

420/6=70 mins

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3 years ago

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Sergio039 [100]

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$y \alpha {x}^{2}$ introducing a constant,

y=kx^2

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$2 = {3}^{2} \times k$

2=9k . dividing through by 9 to get the value of k

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8x + 6y = 10 ----------- (1)
5x - 3y = 2.2 ---------- (2)

(2) x 2:
10 x - 6y = 4.4 --------(2a)

(2a) + (1)
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x = 1.8 ------- sub into (1)
8 (1.8) + 6y = 10
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There is 1 set of solution to it. (Answer C)

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